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1 插件安装
npm install vue-pdf
vue-pdf GitHub:https://github.com/FranckFreiburger/vue-pdf#readme
参考文档:https://www.cnblogs.com/steamed-twisted-roll/p/9648255.html
catch报错:vue-pdf组件报错vue-pdf Cannot read properties of undefined (reading ‘catch‘)_你看我像是会的样子吗?的博客-CSDN博客
2 代码示例
Example.01 超简单分页预览
- <template>
- <div class="container">
- <div class="header">
- <van-nav-bar
- title="文件预览"
- left-text="关闭"
- left-arrow
- @click-left="returnTo"
- />
- </div>
- <div class="main">
- <pdf
- :src="src"
- :page="currentPage"
- @num-pages="pageCount=$event"
- @page-loaded="currentPage=$event"
- @loaded="loadPdfHandler">
- </pdf>
- </div>
- <div class="footer">
- <van-pagination v-model="currentPage" :page-count="pageCount" mode="simple"/>
- </div>
- </div>
- </template>
-
- <script>
- import pdf from 'vue-pdf'
- // 引入api
- import { getItemDetailAPI } from '@/api'
-
- export default {
- name: 'PreView',
- components: {
- pdf
- },
- data () {
- return {
- file_id: '',
- src: '',
- currentPage: 0, // pdf文件页码
- pageCount: 0 // pdf文件总页数
- }
- },
- created () {
- this.file_id = this.$route.query.item_id
- // this.fetchFileDetail()
- this.src = '/files/xxxx.pdf' // 本地测试版
- },
- methods: {
- returnTo () {
- // this.$router.go(-1)
- this.$router.back() // 返回
- },
- // 改变PDF页码,val传过来区分上一页下一页的值,0上一页,1下一页
- changePdfPage (val) {
- // console.log(val)
- if (val === 0 && this.currentPage > 1) {
- this.currentPage--
- // console.log(this.currentPage)
- }
- if (val === 1 && this.currentPage < this.pageCount) {
- this.currentPage++
- // console.log(this.currentPage)
- }
- },
- // pdf加载时
- loadPdfHandler (e) {
- this.currentPage = 1 // 加载的时候先加载第一页
- },
- // 根据fileId获取文件
- async fetchFileDetail () {
- /** 文件地址 **/
- // this.src = `/hbdjv1/files/${this.file_name}` // 发布版
- // this.src = `/files/${this.file_name}` // 本地测试版
- const params = {
- file_id: this.file_id
- }
- this.$toast.loading({ // 打开toast提示
- message: '加载中...',
- forbidClick: true,
- loadingType: 'spinner',
- duration: 0
- })
- console.log('=====文件详情===')
- console.log(params)
- const res = await getItemDetailAPI(params)
- this.$toast.clear() // 关闭toast
- if (res && res.code === 200) {
- if (res.data && res.data.length > 0) {
- this.src = res.data[0].url
- }
- }
- }
- }
- }
- </script>
-
Example.02 少于20页滚动预览,多于20分页预览
- <template>
- <div class="container">
- <div class="header">
- <van-nav-bar
- title="文件预览"
- left-text="关闭"
- left-arrow
- @click-left="returnTo"
- />
- </div>
- <div class="main" v-if="loaded">
- <!-- 页数 <= 20 直接滑动 -->
- <div v-show="pageCount <= divider ">
- <pdf v-for="index in pageCount" :key="index" :src="src" :page="index"></pdf>
- </div>
- <!-- 页数 > 20 分页 -->
- <div v-show="pageCount > divider">
- <pdf
- :src="src"
- :page="currentPage"
- @num-pages="pageCount=$event"
- @page-loaded="currentPage=$event"
- @loaded="loadPdfHandler">
- </pdf>
- </div>
- </div>
- <div class="footer" v-show="pageCount > divider" v-if="loaded">
- <van-pagination v-model="currentPage" :page-count="pageCount" mode="simple"/>
- </div>
- <van-empty description="文件加载失败" v-else/>
- </div>
- </template>
- <script>
- import pdf from 'vue-pdf'
- // 引入api
- import { getItemDetailAPI } from '@/api'
-
- export default {
- name: 'PreView',
- components: {
- pdf
- },
- data () {
- return {
- file_id: '',
- src: '',
- currentPage: 0, // pdf文件页码
- pageCount: 0, // pdf文件总页数
- divider: 20, // 设置分割数
- loaded: false
- }
- },
- created () {
- this.file_id = this.$route.query.item_id
- this.fetchFileDetail()
- },
- methods: {
- returnTo () {
- // this.$router.go(-1)
- this.$router.back() // 返回
- },
- // 改变PDF页码,val传过来区分上一页下一页的值,0上一页,1下一页
- changePdfPage (val) {
- // console.log(val)
- if (val === 0 && this.currentPage > 1) {
- this.currentPage--
- // console.log(this.currentPage)
- }
- if (val === 1 && this.currentPage < this.pageCount) {
- this.currentPage++
- // console.log(this.currentPage)
- }
- },
- // pdf加载时
- loadPdfHandler (e) {
- this.currentPage = 1 // 加载的时候先加载第一页
- },
- // 根据fileId获取文件
- async fetchFileDetail () {
- /** 文件地址 **/
- // this.src = `/hbdjv1/files/${this.file_name}` // 发布版
- // this.src = `/files/${this.file_name}` // 本地测试版
- const params = {
- file_id: this.file_id
- }
- this.$toast.loading({ // 打开toast提示
- message: '加载中...',
- forbidClick: true,
- loadingType: 'spinner',
- duration: 0
- })
- console.log('=====文件详情===')
- console.log(params)
- const res = await getItemDetailAPI(params)
- this.$toast.clear() // 关闭toast
- if (res && res.code === 200) {
- if (res.data && res.data.length > 0) {
- // this.src = res.data[0].url
- this.src = pdf.createLoadingTask(res.data[0].url)
- this.src.promise.then(pdf => {
- this.$nextTick(() => {
- this.pageCount = pdf.numPages // pdf总页数
- this.loaded = true
- })
- })
- }
- }
- }
- }
- }
- </script>
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